Process of and apparatus for fire-polishing glass.



s. 0'. RIGHARDSON, JR. PROCESS 0I' AND APPARATUS FOR FIRE POLISHING GLASS.

APPLICATION IILBD IA! 3, 19 08.

Patented Sept 22, 1903.

whereby the-interior surface otglass articles UNlT-ED --'s:rA'I1 s, ;PAl.TEN'LI?OFFICE;v

QYSOLON'QSMOND RICHARDSON, JR.,.0 FTLED onto, ASSIGNOR, BgY MESNE As'sIGNfJIENTS,

' TO H. -c. FRY GLASS communes ROCHESTER, PENNsYLvANnt; A CORPORATION on PENNSYLVANIA To-allwhom it 'mdy concern:

ARDsoN, Jr;.,- a citizen of the United States, residing at Toledo} in th'elvcounty of Lucas and State of Ohio, have invented certain new and usefullmprovements 1n Processes of-and the following is a spe'cification;

My-lnventlon relates to improvements n Apparatus for Fire-Polishing"Glass, of which the art of polishing-glass by means of flame,

and has forits object the provision of'means may be simply and effectively polished, Without distorting form of the article subjected to such treatment'. My. invention is especially useful in such treatment of' These, and-such other objects as may hereafter. appear, are attainedby myinvention, which may be conveniently embodied in, and. practiced with; the apparatus shown in the -y 'accom an in drawin's in which .P y g I clent air for combustion the burner D. The box 01s otherwise closed,.

I I be'to' causethe fuel jet to sides of the lire-box and be lish a directjet from Figure .1 ,s

2 is a detail: Fig. 4 -shows a modified, form of apparat us.

7 Like letters of refelence'indicatc the same parts 111 the seyeral figures of the drawings.- 4

Referring by letter to'the accompanying drawings, A indicates a' brick'fouhdathm providedpreferablyWith a supporting shell B;

C is a'fire-boxsupported on the foundation A and arranged to receive a fuel burner l). Preferably the fuel burner l) sup; lies fuel oil .under 'pressur e and communicates with an o 'enin E in thebox (J, through which sullimay enter around except for the discharge nozzle l, which extends downwardly toward'the shelf-B. Itwillbe noted that'to insure more perfect combustion in the fire-box, the nozzle F is preferably arranged at a point remote from" the inlet opcning. E and also extends at right angles to the llne oi entrance ol'the. from the burner I), so that the tendemwy will I v broken .up therey, so as to be lntlmatelylnternungled vxith, the oxygenof the an, thus pi-onwt'mg'colm the discharge nozzle. H

A cast-iron plate G may be eonvmtiently or in any way aifecting the pressed -'.'glass articles.'

IOWS oneform' of apparatus- .Fig: '3 is another detail 5 strike against the become heated by the rnocnss'onann APPARATUS m Fmn-rousmne GLASS.

' Specification Letters Pa Patented sepezz, ieoe.- l npplicaition'iiledmayii,19lJ6. Serial 514,994.

y i mounted'ujmn the shelf B, anda arm-6r ll" Be it known that I, 1S LoN ()sMOND RIcn-J' may be restedfupon the plate G andfbclowfthe nozzle 1*.

fuel "is the burner l)-. -l rel erably the burner 'D-projects a spray of fuel oil into the lire-box, and sufficient volume of 'air also is supplied to thcfire-box;either through the opening Evor' otherwise;with'the result that'the sprayof fuel. oil, it oil be used a fuel, and the oxygen-bearing element, such :as air,' are thoroughly ntermingled and COfllblllOd 1n the lfire-boxQ, which, thus constitutes a combus;

ti'on chamber. lonseqiuently; the line-box being properly proportioned, a bodyofflive flame/ at. an exceedingly high i temperature,

resulting from the fret-feet comlmstion ol' the fuel elements, will he projected downwardly l "lo utilize this flame through the nozzle F.

in the fire polishing'ol pressed-glass articles,

for exampl c, .l renmve the glass blank It from the. pressing mold as soon asit suiliciently sctt'o permit of" such handling without (llS- tortion', and place it in the former ll, wluch 'wil] ordinarily, though not necessarily, be materially cooler than the glass blank. 1'

then place the l'ormerll under the nozzle l so tl'rat the body oflive flame projected from the nozzle l will bel'orced directly into. the

inleriocof the glassblank and will sulli fciently soften .the interior surface of the blank to obliterate all mold marks and give the,-desire l lire polish.

the resulting heat,- so as to lessen the soften ing cll'cct oi the polishing flan-1e. upon the body of the blank and indcedfhy suitably (-ionstructing the former and providing for free radiation from thecx tcrior surface ther'eol", in any familiarmanm-u' fthis result may be attained tof'such, anextent as to avoid such softening ol" theblanltby the olishing 'llame as would otherwise result in istorting the blank. Aside; however, from such preservation of the form of the blank by the I radiation of the heat-from the exterior of the former, the former may serve to mechanically inclose'a'nd support-the exterior of the blank it-all p'oints,'so as to prevent any change of form in the blank, even though it polishing llame to such anextentzas to become moreorless plastic throughoi-il'. i 7

7 v'lhe former will" serve, to a" greater or less extent, to radiate When the blank has been subjectedto the polishing flame for a suflicient length of time to obtain the result desired, the former conlieu of the shelf B, I provide a table I, which rotates upon a support J and is adapted to hold a number of blank-containing formers H so as to bring them successively under the nozzle F. With this construction, such a time elapses between the time a former is '20 moved from under the nozzle F until it reaches the extreme outer point in the rotation of the table I that the blank may alwaysbe sufficiently cooled and set when it reaches such outer point to permit of the removal of the polished blank and the insertion of an unpolished blank, which will ultimately be carried around and under the nozzle F. These are suggestive and practical embodiments of my improved apparatus for prac-. ticing my process.

It will be noted that, among other advantages of my invention, it makes it practical to polish either or both sidesof a blank, for, when the blank is removed from the mold, it may, if desired, be mounted upon a former II .which shall support the interior of the blank, as shown in Fig. 3, thus permitting of the polishing of the exterior of the blank, whereupon the blank maybe reversed and supported by another suitably shaped former and polished on its interior.

I claim:

1. The process of fire polishing a glass blank, which comprises forming the blank in. a mold, removing the blank from the mold, and then subjecting one surface of the blank to a polishing flame while the surface of the blank opposite the surface against which the polishing flame is directed is supported by means.arranged so as to be exposed to the air and out of the polishing flame so as to prevent such opposite surface from becoming plastic.

2. The process of fire-polishing a glass blank, which comprises forming the blank in a mold, removing the blank from the mold and then subjecting one surface of the blank to a polishing flame which is confined to such surface while the surface ofrthe blank opposite the surface against which the polishing flame is directed is supported by means exposed to the air outside the apparatus and arranged so that the flame is not directed against it.

3. In apparatus for fire polishing glass, the combination of a chamber closed on the top and sides, with means for causing the fuel elements to pass horizontally through said chamber, a support for the article to be polished below said chamber, and a nozzle extending downward from the bottom of said chamber toward said support.

4. In apparatus for fire polishing glass, the combination of a support to hold the article to be polished, with a nozzle extending downward toward said support, -means for discharging the fuel element in substantially a horizontal direction toward said nozzle, and means for confining the same so as to cause the flames to pass down through said nozzle.

SOlitlN tlSlllONl) lilUlLilthb'tlX, .llt.

Witnesses:

F. H. \Vmen'r, T. E. \Vom 

